2606B System SourceMeter® Instrument Reference Manual
Section 2: General operation
2606B-901-01 Rev. B / May 2018
2-75
Range programming example
The programming example below illustrates how to control both source and measure ranges. The
2606B is set up as follows:
•
Voltage source range: Auto
•
Current measure range: 10 mA
•
Voltage source current limit: 10 mA
-- Restore 2606B defaults.
smua.reset()
-- Set V source range to auto.
smua.source.autorangev = smua.AUTORANGE_ON
-- Select 10 mA measure range.
smua.measure.rangei = 10e-3
-- Set limit level to 10 mA.
smua.source.limiti = 10e-3
Digits
The virtual front-panel display resolution of the measured reading depends on the DIGITS setting.
The default display resolution setting is 6.5 digits. The DIGITS setting selects display resolution for all
measurement functions.
The DIGITS setting has no effect on the format of readings returned by a
print()
command over a
remote interface. For information to adjust the format of remote interface readings, see
(on page 7-92).
The number of displayed digits does not affect accuracy or speed. Accuracy and speed are controlled
by the SPEED setting (see
(on page 2-76)).
Setting display resolution from the virtual front panel
To set the display resolution, press the
DIGITS
key until the correct number of digits is displayed.
Available display resolutions are 4.5, 5.5, and 6.5 digits.
Setting display resolution from a remote interface
The following table summarizes use of the
display.smu
X
.digits
command. See the
(on page 7-1) for more information.
Digits commands
Command*
Description
display.smu
X
.digits = display.DIGITS_4_5
Set display to 4.5 digits.
display.smu
X
.digits = display.DIGITS_5_5
Set display to 5.5 digits.
display.smu
X
.digits = display.DIGITS_6_5
Set display to 6.5 digits.
* smu
X
can be
smua
for SMU Channel A or
smub
for SMU Channel B
Digits programming example
-- Select 5.5 digits.
display.smua.digits = display.DIGITS_5_5
